Home / 99,768.46-137,704.04-57,351.60

Finding the Fourth Proportional to 99,768.46, 137,704.04 and 57,351.60

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Solution

The fourth proportional to 99,768.46, 137,704.04 and 57,351.60 is: 79,158.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,768.46 : 137,704.04 = 57,351.60 : x
  2. Step 2: Convert to fraction form
    99,768.46/137,704.04 = 57,351.60/x
  3. Step 3: Cross multiply
    99,768.46x = 137,704.04 × 57,351.60
  4. Step 4: Simplify right side
    99,768.46x = 7,897,547,020.46
  5. Step 5: Solve for x
    x = 7,897,547,020.46/99,768.46
  6. Step 6: Final answer
    x = 79,158.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.